From the 1 of 9 linked papers with an AI index.
9 papers
Sharp Quantum Capacity Thresholds: Exponential Strong Converses for Degradable and Antidegradable Channels
Tulja Varun Kondra, Raphael Brinster, Hermann Kampermann +2
The quantum capacity of a noisy channel quantifies the maximum rate at which quantum information can be transmitted reliably. For general channels, its evaluation requires an optim…
Very Strong Irreversibility of Quantum Entanglement
Tulja Varun Kondra, Raphael Brinster, Hermann Kampermann +2
The paper proves that quantum entanglement manipulation is fundamentally irreversible by showing an exponential gap between the strong‑converse distillable entanglement and the str…
Optimality of universal conclusive entanglement concentration protocols
Alexandre C. Orthey, Aby Philip, Tulja Varun Kondra +1
Entanglement concentration is essential for quantum technologies, yet rigorous bounds on the success probability for universal protocols (those requiring no prior knowledge about t…
Fundamental limitations on entanglement extraction from purity
Tulja Varun Kondra, Pedro Barrios Hita, Justus Neumann +2
States of sufficiently low purity are separable and cannot be entangled by unital (purity-non-generating) operations. Since high-purity states are experimentally demanding, it is n…
Stochastic approximate state conversion for entanglement and general quantum resource theories
Tulja Varun Kondra, Chandan Datta, Alexander Streltsov
Quantum resource theories provide a mathematically rigorous way of understanding the nature of various quantum resources. An important problem in any quantum resource theory is to…
Second Law of Entanglement Manipulation with Entanglement Battery
Ray Ganardi, Tulja Varun Kondra, Nelly H. Y. Ng +1
A central question since the beginning of quantum information science is how two distant parties can convert one entangled state into another. It has been conjectured that such con…